MIPS: pre-crankshaft updates to assembler and related files. (1/3)

src/mips/simulator-mips.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdlib.h>
 #include <math.h>
 #include <limits.h>
 #include <cstdarg>
 #include "v8.h"
 
 #if defined(V8_TARGET_ARCH_MIPS)
 
+#include "cpu.h"
 #include "disasm.h"
 #include "assembler.h"
 #include "globals.h"    // Need the BitCast.
 #include "mips/constants-mips.h"
 #include "mips/simulator-mips.h"
 
 
 // Only build the simulator if not compiling for real MIPS hardware.
 #if defined(USE_SIMULATOR)
 
@@ skipping 1162 matching lines @@
 // interrupt is caused.  On others it does a funky rotation thing.  For now we
 // simply disallow unaligned reads, but at some point we may want to move to
 // emulating the rotate behaviour.  Note that simulator runs have the runtime
 // system running directly on the host system and only generated code is
 // executed in the simulator.  Since the host is typically IA32 we will not
 // get the correct MIPS-like behaviour on unaligned accesses.
 
 int Simulator::ReadW(int32_t addr, Instruction* instr) {
   if (addr >=0 && addr < 0x400) {
     // This has to be a NULL-dereference, drop into debugger.
+    PrintF("Memory read from bad address: 0x%08x, pc=0x%08x\n",
+           addr, reinterpret_cast<intptr_t>(instr));
     MipsDebugger dbg(this);
     dbg.Debug();
   }
   if ((addr & kPointerAlignmentMask) == 0) {
     intptr_t* ptr = reinterpret_cast<intptr_t*>(addr);
     return *ptr;
   }
   PrintF("Unaligned read at 0x%08x, pc=0x%08" V8PRIxPTR "\n",
          addr,
          reinterpret_cast<intptr_t>(instr));
   MipsDebugger dbg(this);
   dbg.Debug();
   return 0;
 }
 
 
 void Simulator::WriteW(int32_t addr, int value, Instruction* instr) {
   if (addr >= 0 && addr < 0x400) {
     // This has to be a NULL-dereference, drop into debugger.
+    PrintF("Memory write to bad address: 0x%08x, pc=0x%08x\n",
+           addr, reinterpret_cast<intptr_t>(instr));
     MipsDebugger dbg(this);
     dbg.Debug();
   }
   if ((addr & kPointerAlignmentMask) == 0) {
     intptr_t* ptr = reinterpret_cast<intptr_t*>(addr);
     *ptr = value;
     return;
   }
   PrintF("Unaligned write at 0x%08x, pc=0x%08" V8PRIxPTR "\n",
          addr,
@@ skipping 1565 matching lines @@
 }
 
 
 #undef UNSUPPORTED
 
 } }  // namespace v8::internal
 
 #endif  // USE_SIMULATOR
 
 #endif  // V8_TARGET_ARCH_MIPS